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PHP: Is The Sun Up (standalone version)?
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<?php | |
function sunIsUp(\DateTime $when, $lat, $lon): bool { | |
$whenTimestamp = $when->getTimestamp(); | |
$sunriseTimestamp = date_sunrise( | |
$whenTimestamp, | |
SUNFUNCS_RET_TIMESTAMP, | |
$lat, | |
$lon | |
); | |
$sunsetTimestamp = date_sunset( | |
$whenTimestamp, | |
SUNFUNCS_RET_TIMESTAMP, | |
$lat, | |
$lon | |
); | |
return ($whenTimestamp > $sunriseTimestamp) && ($whenTimestamp < $sunsetTimestamp); | |
} |
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<?php | |
// Verify sunIsUp functionality using location of Brussels, Belgium. | |
// On 2018-11-15, sunrise should be at 08:00 and sunset at 16:56 | |
$lat = 50.8503; | |
$lon = 4.3517; | |
var_dump(sunIsUp(new \DateTime('2018-11-15 07:15:00', new \DateTimeZone('Europe/Brussels')), $lat, $lon)); // false | |
var_dump(sunIsUp(new \DateTime('2018-11-15 07:59:00', new \DateTimeZone('Europe/Brussels')), $lat, $lon)); // false | |
var_dump(sunIsUp(new \DateTime('2018-11-15 08:00:00', new \DateTimeZone('Europe/Brussels')), $lat, $lon)); // true | |
var_dump(sunIsUp(new \DateTime('2018-11-15 09:15:00', new \DateTimeZone('Europe/Brussels')), $lat, $lon)); // true | |
var_dump(sunIsUp(new \DateTime('2018-11-15 16:15:00', new \DateTimeZone('Europe/Brussels')), $lat, $lon)); // true | |
var_dump(sunIsUp(new \DateTime('2018-11-15 16:55:00', new \DateTimeZone('Europe/Brussels')), $lat, $lon)); // true | |
var_dump(sunIsUp(new \DateTime('2018-11-15 16:56:00', new \DateTimeZone('Europe/Brussels')), $lat, $lon)); // false | |
var_dump(sunIsUp(new \DateTime('2018-11-15 17:15:00', new \DateTimeZone('Europe/Brussels')), $lat, $lon)); // false | |
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